The TVN_BEGINDRAG notification message notifies a tree-view controlís parent window that a drag-and-drop operation involving the left mouse button is being initiated. This notification message is sent in the form of a WM_NOTIFY message.
TVN_BEGINDRAG pnmtv = (NM_TREEVIEW FAR *) lParam
No return value.
A tree-view control that has the TVS_DISABLEDRAGDROP style does not send this notification message.
NM_TREEVIEW, TV_ITEM, WM_NOTIFY
|file: /Techref/os/win/api/win32/mess/src/msg21_7.htm, 1KB, , updated: 2000/4/7 12:20, local time: 2022/5/21 21:52,
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